Posts Tagged research

Nov 14 2013

State-of-the-art fishery research vessel Reuben Lasker completed for NOAA to commission in 2014

Seafood News
SEAFOOD.COM NEWS [seafoodnews.com] November 13, 2013 – NOAA has taken delivery of Reuben Lasker, the agency’s newest high-tech fisheries survey vessel from Marinette Marine Corporation, a Fincantieri company. The 208-ft. ship will primarily support fish, marine mammals and turtle surveys off the U.S. West Coast and in the eastern tropical Pacific Ocean.

“Reuben Lasker represents a significant milestone in the agency’s efforts to provide world-class marine science platforms,” said Rear Adm. Michael S. Devany, director of the NOAA Office of Marine and Aviation Operations and the NOAA Corps. “This state-of-the-art ship will play a key role in supporting NOAA’s mission and serving the nation.”

Built at MMC’s shipyard in Marinette, Wisc., and funded through the American Recovery and Reinvestment Act, Reuben Lasker is the fifth in a series of Oscar Dyson-class ships built for the agency. The ship is equipped with the latest technology for fisheries and oceanographic research, including advanced navigation systems, acoustic sensors, and scientific sampling gear.

“MMC has a long, established history of delivering exceptionally crafted and complex vessels,” said Chuck Goddard, MMC’s president and CEO. “The talented and skilled workers of MMC are proud to deliver this high quality vessel to NOAA in support of its important mission.”

The ship is also engineered to produce much less noise than other survey vessels, allowing scientists to study fish populations and collect oceanographic data with fewer effects on fish and marine mammal behavior. The ship’s comprehensive environmental sampling capabilities will enable researchers to gather a broad suite of marine life data with unprecedented accuracy.

Read the full article here.

Oct 25 2013

Sustainable Seafood – A U.S. Success Story

NOAA   FishWatch

The United States is a recognized global leader in responsibly managed fisheries and sustainable seafood. And you can help too!

This video introduces consumers to FishWatch.gov, which provides easy-to-understand, science-based facts to help users make smart, sustainable seafood choices.

Through this video, you’ll learn more about “sustainability” and what NOAA is doing to ensure that our seafood is caught and farmed responsibly with consideration for the health of a species, the environment, and the livelihoods of the people that depend on them.

Have you ever thought about where that piece of salmon on your plate came from? It could have been caught in a wild fishery or harvested from an aquaculture operation. Maybe it’s from the United States, or maybe it was imported from another country, like Canada or Chile?

Read the full story here.

http://www.youtube.com/watch?v=-ALnClkAPA4

Oct 24 2013

Eastern Steller sea lions removed from Endangered Species Act list

Seafood News

SEAFOOD.COM NEWS [Cordova Times] By Margarate Bauman – October 24, 2013 – Steller sea lions within the eastern distinct population segment, east of Prince William Sound, will be removed from the Endangered Species Act list, Jim Balsiger, administrator for NOAA Fisheries’ Alaska region said Oct. 23.

This is the first species NOAA has delisted, citing recovery, since the eastern North Pacific gray whale was taken off the list of threatened and endangered species in 1994.

The delisting will take effect 30 days after publication of the final rule in the Federal Register.

Balsiger said the agency is delighted to see the recover of this population segment of Steller sea lions, and that they would work with the states and other partners to monitor the population to ensure its continued health.

NOAA officials said delisting is warranted because the species has met the recovery criteria outlined in its 2008 recovery plan and no longer meets the definition of a threatened or endangered species under the act.

Best available scientific information indicates the eastern Steller sea lion population has increased from an estimated 18.040 animals in 1979 to an estimated 70,174 animals in 2010, the most recent year for which data are available.

Eastern Steller sea lions will continue to be protected under the Marine Mammal Protection Act. With delisting, federal agencies proposing actions that may affect the eastern Steller sea lions are no longer required to consult with NOAA Fisheries under Section 7 of the ESA. NOAA Fisheries will continue to monitor the effects of proposed projects on the eastern population to ensure existing measures under the Marine Mammals Protection Act provide necessary protection to maintain recovery status, Balsiger said.

NOAA has developed a post-delisting monitoring plan for this population. As a precautionary measure, the plan will be in effect for a decade, twice the required five year time period under the ESA.

Read the full story here.

Oct 2 2013

British study debunks mercury in fish risk for pregnant women

Seafood News

New research from the Children of the 90s study at the University of Bristol suggests that fish accounts for only seven per cent of mercury levels in the human body.

In an analysis of 103 food and drink items consumed by 4,484 women during pregnancy, researchers found that the 103 items together accounted for less than 17 per cent of total mercury levels in the body.

Concerns about the negative effects of mercury on fetal development have led to official advice warning against eating too much fish during pregnancy. This new finding, published today in Environmental Health Perspectives, suggests that those guidelines may need to be reviewed.

Previous research by Children of the 90s has shown that eating fish during pregnancy has a positive effect on the IQ and eyesight of the developing child, when tested later in life. Exactly what causes this is not proven, but fish contains many beneficial components including iodine and omega-3 fatty acids.

After fish (white fish and oily fish) the foodstuffs associated with the highest mercury blood levels were herbal teas and alcohol, with wine having higher levels than beer. The herbal teas were an unexpected finding and possibly due to the fact that herbal teas can be contaminated with toxins. Another surprise finding was that the women with the highest mercury levels tended to be older, have attended university, to be in professional or managerial jobs, to own their own home, and to be expecting their first child.

Overall, however, fewer than one per cent of women had mercury levels higher than the maximum level recommended by the US National Research Council. There is no official safe level in the UK.

Read the full article here.

Sep 26 2013

Scientists find early facial features on ancient fish

USA Today
Scientists have found the most primitive creature to have had a face like humans, and there’s definitely something fishy about it.

This first face belongs to the newfound species Entelognathus primordialis, “primordial complete-jaw,” an armored fish that plied the seas nearly 420 million years ago. Related fish from that period had simple jaws made mostly of cartilage. But Entelognathus had a complex jaw, knit together from many bony plates like those found in the jaws of humans and dogs and thousands of other living animals with backbones. That strangely modern jaw — stuck on an otherwise primitive body — gives it what could be called the earliest known modern face.

“This is like finding the nose of a space shuttle in a hay wagon from the Middle Ages,” paleontologist Xiaobo Yu of Kean University in New Jersey, one of the researchers responsible for the new find, says via e-mail. The new fish is also contributing to a major upheaval in scientists’ understanding of the base of the family tree that spawned rattlesnakes and guppies and penguins and, eventually, Homo sapiens.

The first Entelognathus fossil was unearthed in China in 2010, but it was not until scientists had chipped away at the specimen in the lab that they realized they were onto something very weird. Their new fish looked like a placoderm, an ancient swimmer girded in homegrown armor made of bony plates. The fish, described in this week’s issue of Nature, had small, almost immobile eyes and a flat forehead. And then there was its lower face: a jigsaw puzzle of interlocking bones a lot like humans. It’s a homely ancient fish with a supermodel’s bone structure.

Read the full article here.

Facial Features on Ancient Fish

Sep 23 2013

FDA says US, imported seafood has no radiation risk from Fukushima

Seafood News
SEAFOOD.COM NEWS by John Sackton Sept. 23, 2013 – In a September update on food safety issues related to the Fukushima nuclear disaster, the FDA declared that there is no public health concern for the U.S. They said that the same holds true for imported seafood, including seafood from Japan. For example, in a study that detected very low levels of cesium in bluefin tuna caught off the coast of California, the FDA says these levels were 300 times lower than the level that would even trigger an investigation to see if there was a public health concern. In short, although some specific radioactive isotopes may be detected from time to time, the FDA says that these levels are so low as to provide no issue whatsoever for public health.

Their full statement is below:

To date, FDA has no evidence that radionuclides from the Fukushima incident are present in the U.S. food supply at levels that would pose a public health concern. This is true for both FDA-regulated food products imported from Japan and U.S. domestic food products, including seafood caught off the coast of the United States.

Consequently, FDA is not advising consumers to alter their consumption of specific foods imported from Japan or domestically produced foods, including seafood. FDA continues to closely monitor the situation at and around the Fukushima Dai-ichi facility, as it has since the start of the incident and will coordinate with other Federal and state agencies as necessary, standing ready to take action if needed, to ensure the safety of food in the U.S. marketplace.

Import Alert # 99-33, which instructs FDA field personnel to detain foods shipments from Japan if the food is likely to contain radionuclide contamination, remains active. In addition, FDA tests for radionuclides as part of its routine surveillance, through the toxic elements in food and foodware monitoring program and through its Total Diet Study.

On top of the information obtained from its testing of imported and domestic foods, FDA stays current on radiation monitoring efforts by other U.S. Government agencies, including the environmental radiation monitoring program (RadNet) conducted by the Environmental Protection Agency (EPA). Additionally, the Agency consults on a formal and informal basis with experts from government, academia and the private sector on radiation safety issues. FDA scientists also keep abreast of scientific publications and reports from both private and public scientific institutions, including oceanographic research institutions. For example, a study published in 2012 in the Proceedings of the National Academy of Sciences (PNAS) reported finding very low levels of Cesium in Pacific Bluefin tuna caught by recreational fisherman off the coast of California in August 2011. FDA reviewed this study and determined that the levels of cesium were roughly 300 times lower than levels that would prompt FDA to investigate further to determine if there were a health concern.

Read the full article here.

Sep 17 2013

Ocean acidification, the lesser-known twin of climate change, threatens to scramble marine life on a scale almost too big to fathom.

Seattle Times Sea Change

NORMANBY ISLAND, Papua New Guinea — Katharina Fabricius plunged from a dive boat into the Pacific Ocean of tomorrow.

She kicked through blue water until she spotted a ceramic tile attached to the bottom of a reef.

A year earlier, the ecologist from the Australian Institute of Marine Science had placed this small square near a fissure in the sea floor where gas bubbles up from the earth. She hoped the next generation of baby corals would settle on it and take root.

Fabricius yanked a knife from her ankle holster, unscrewed the plate and pulled it close. Even underwater the problem was clear. Tiles from healthy reefs nearby were covered with budding coral colonies in starbursts of red, yellow, pink and blue. This plate was coated with a filthy film of algae and fringed with hairy sprigs of seaweed.

Instead of a brilliant new coral reef, what sprouted here resembled a slimy lake bottom.

Isolating the cause was easy. Only one thing separated this spot from the lush tropical reefs a few hundred yards away.

Carbon dioxide.

In this volcanic region, pure CO2 escapes naturally through cracks in the ocean floor. The gas bubbles alter the water’s chemistry the same way rising CO2 from cars and power plants is quickly changing the marine world.

In fact, the water chemistry here is exactly what scientists predict most of the seas will be like in 60 to 80 years.

That makes this isolated splash of coral reef a chilling vision of our future oceans.

Watch the introduction video.

Read the complete article, watch the videos and look at the images here.

Ocean acidification Images 1

 

 

Sep 17 2013

Movement of marine life follows speed and direction of climate change

Science Daily

Scientists expect climate change and warmer oceans to push the fish that people rely on for food and income into new territory. Predictions of where and when species will relocate, however, are based on broad expectations about how animals will move and have often not played out in nature. New research based at Princeton University shows that the trick to more precise forecasts is to follow local temperature changes.

The researchers report in the journal Science the first evidence that sea creatures consistently keep pace with “climate velocity,” or the speed and direction in which changes such as ocean temperature move. They compiled 43 years of data related to the movement of 128 million animals from 360 species living around North America, including commercial staples such as lobster, shrimp and cod. They found that 70 percent of shifts in animals’ depth and 74 percent of changes in latitude correlated with regional-scale fluctuations in ocean temperature.

“If we follow the temperature, which is easier to predict, that provides a method to predict where the species will be, too,” said first author Malin Pinsky, a former Princeton postdoctoral researcher in ecology and evolutionary biology who is now an assistant professor of ecology and evolution at Rutgers University.

“Climate changes at different rates and in different directions in different places,” he said. “Animals are basically being exposed to different changes in temperature.”

The researchers compiled survey data collected from 1968 to 2011 by American and Canadian fishery-research centers and government panels. The surveys recorded surface and bottom temperatures, as well as the complete mass of animals in nine areas central to North American fisheries: the Aleutian Islands; the eastern Bering Sea; the Gulf of Alaska; the West Coast from Washington to California; the Gulf Coast from Louisiana to Mexico; the Northeast coast from North Carolina to Maine; the coast of Nova Scotia; the southern Gulf of St. Lawrence; and the Atlantic Ocean east of Newfoundland.

Details of the surveys revealed that sea creatures adhere to a “complex mosaic of local climate velocities,” the researchers reported. On average, changes in temperature for North America moved north a mere 4.5 miles per decade, but in parts of Newfoundland that pace was a speedier 38 miles north per decade. In areas off the U.S. West Coast, temperatures shifted south at 30 miles per decade, while in the Gulf of Mexico velocities varied from 19 miles south to 11 miles north per decade.

Animal movements were just as motley. As a whole, species shifted an average of 5 miles north per decade, but 45 percent of animal specific populations swam south. Cod off Newfoundland moved 37 miles north per decade, while lobster in the northeastern United States went the same direction at 43 miles per decade. On the other hand, pink shrimp, a staple of Gulf Coast fisheries, migrated south 41 miles per decade, the researchers found.

Read the full article here.

Sep 12 2013

Fukushima Fallout Not Affecting U.S.-Caught Fish

In recent weeks, there has been a significant uptick in news from Fukushima, Japan. Officials from the Japanese government and the Tokyo Electric Power Company, or TEPCO, admitted that radioactive water is still leaking from the nuclear plant crippled by the 2011 earthquake and tsunami.

The new revelations about the amount of water leaking from the plant have caused a stir in the international community and led to additional scrutiny of Pacific Ocean seafood. Last week, South Korea announced it had banned all imports of Japanese seafood from a large area around Fukushima. And Al Jazeera reported that the cost to the region’s fishing industry over the past two years exceeds $3.5 billion.

Now, fears are mounting that the radiation could lead to dangerous contamination levels in seafood from more of the Pacific Basin. Numerous blog posts and articles expressed concern about the potential for higher concentrations of radioactive particles, particularly in highly migratory species such as tuna that may have encountered Fukushima’s isotopes—including highly dangerous and toxic materials such as cesium-137, strontium-90, and iodine-131—on their transoceanic travels.

Amid alarmist outcry and opposing assurances that the radiation levels in fish are no more harmful than what’s found in the average banana, I decided to dig a little deeper, and a few weeks ago, I posted a brief analysis on Climate Progress. After reading the comments on that piece, it became clear I needed to do a bit more homework.

Read the full article here.

A worker using a Geiger counter checks for possible radioactive contamination at Noryangjin Fisheries Wholesale Market in Seoul, South Korea, Friday, September 6, 2013.

Sep 12 2013

Unprecedented Rate and Scale of Ocean Acidification Found in the Arctic

USGS Logo
ST. PETERSBURG, Fla. — Acidification of the Arctic Ocean is occurring faster than projected according to new findings published in the journal PLOS ONE.  The increase in rate is being blamed on rapidly melting sea ice, a process that may have important consequences for health of the Arctic ecosystem.

Ocean acidification is the process by which pH levels of seawater decrease due to greater amounts of carbon dioxide being absorbed by the oceans from the atmosphere.  Currently oceans absorb about one-fourth of the greenhouse gas.  Lower pH levels make water more acidic and lab studies have shown that more acidic water decrease calcification rates in many calcifying organisms, reducing their ability to build shells or skeletons.  These changes, in species ranging from corals to shrimp, have the potential to impact species up and down the food web.

The team of federal and university researchers found that the decline of sea ice in the Arctic summer has important consequences for the surface layer of the Arctic Ocean.  As sea ice cover recedes to record lows, as it did late in the summer of 2012, the seawater beneath is exposed to carbon dioxide, which is the main driver of ocean acidification.

In addition, the freshwater melted from sea ice dilutes the seawater, lowering pH levels and reducing the concentrations of calcium and carbonate, which are the constituents, or building blocks, of the mineral aragonite. Aragonite and other carbonate minerals make up the hard part of many marine micro-organisms’ skeletons and shells. The lowering of calcium and carbonate concentrations may impact the growth of organisms that many species rely on for food.

The new research shows that acidification in surface waters of the Arctic Ocean is rapidly expanding into areas that were previously isolated from contact with the atmosphere due to the former widespread ice cover.

“A remarkable 20 percent of the Canadian Basin has become more corrosive to carbonate minerals in an unprecedented short period of time.  Nowhere on Earth have we documented such large scale, rapid ocean acidification” according to lead researcher and ocean acidification project chief, U.S. Geological Survey oceanographer Lisa Robbins.

Globally, Earth’s ocean surface is becoming acidified due to absorption of man-made carbon dioxide. Ocean acidification models show that with increasing atmospheric carbon dioxide, the Arctic Ocean will have crucially low concentrations of dissolved carbonate minerals, such as aragonite, in the next decade.

Read the full article here.